added missing stringFind to sql backends

Author: Richard Jones

roundup/backends/back_anydbm.py

@@ -15,7 +15,7 @@
 # BASIS, AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
 # SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 # 
-#$Id: back_anydbm.py,v 1.84 2002-09-23 00:50:32 richard Exp $
+#$Id: back_anydbm.py,v 1.85 2002-09-24 01:59:28 richard Exp $
 '''
 This module defines a backend that saves the hyperdatabase in a database
 chosen by anydbm. It is guaranteed to always be available in python
@@ -980,7 +980,6 @@ def import_list(self, propnames, proplist):
             creation = None
         if d.has_key('activity'):
             del d['activity']
-
         self.db.addjournal(self.classname, newid, 'create', d, creator,
             creation)
         return newid

roundup/backends/back_gadfly.py

@@ -1,4 +1,4 @@
-# $Id: back_gadfly.py,v 1.25 2002-09-23 06:48:34 richard Exp $
+# $Id: back_gadfly.py,v 1.26 2002-09-24 01:59:28 richard Exp $
 __doc__ = '''
 About Gadfly
 ============
@@ -95,6 +95,16 @@ def sql_fetchone(self):
                 return None
             raise
 
+    def sql_fetchall(self):
+        ''' Fetch a single row. If there's nothing to fetch, return [].
+        '''
+        try:
+            return self.cursor.fetchall()
+        except gadfly.database.error, message:
+            if message == 'no more results':
+                return []
+            raise
+
     def save_dbschema(self, schema):
         ''' Save the schema definition that the database currently implements
         '''

roundup/backends/back_sqlite.py

@@ -1,4 +1,4 @@
-# $Id: back_sqlite.py,v 1.4 2002-09-23 06:48:35 richard Exp $
+# $Id: back_sqlite.py,v 1.5 2002-09-24 01:59:28 richard Exp $
 __doc__ = '''
 See https://pysqlite.sourceforge.net/ for pysqlite info
 '''
@@ -33,6 +33,11 @@ def sql_fetchone(self):
         '''
         return self.cursor.fetchone()
 
+    def sql_fetchall(self):
+        ''' Fetch a single row. If there's nothing to fetch, return [].
+        '''
+        return self.cursor.fetchall()
+
     def sql_commit(self):
         ''' Actually commit to the database.
 

roundup/backends/rdbms_common.py

@@ -1,4 +1,4 @@
-# $Id: rdbms_common.py,v 1.14 2002-09-23 08:24:51 richard Exp $
+# $Id: rdbms_common.py,v 1.15 2002-09-24 01:59:28 richard Exp $
 
 # standard python modules
 import sys, os, time, re, errno, weakref, copy
@@ -1612,12 +1612,33 @@ def find(self, **propspec):
                 self.classname, prop, ','.join([a for x in values.keys()])))
         sql = '\nintersect\n'.join(tables)
         self.db.sql(sql, allvalues)
-        try:
-            l = [x[0] for x in self.db.cursor.fetchall()]
-        except gadfly.database.error, message:
-            if message == 'no more results':
-                l = []
-            raise
+        l = [x[0] for x in self.db.sql_fetchall()]
+        if __debug__:
+            print >>hyperdb.DEBUG, 'find ... ', l
+        return l
+
+    def stringFind(self, **requirements):
+        '''Locate a particular node by matching a set of its String
+        properties in a caseless search.
+
+        If the property is not a String property, a TypeError is raised.
+        
+        The return is a list of the id of all nodes that match.
+        '''
+        where = []
+        args = []
+        for propname in requirements.keys():
+            prop = self.properties[propname]
+            if isinstance(not prop, String):
+                raise TypeError, "'%s' not a String property"%propname
+            where.append(propname)
+            args.append(requirements[propname].lower())
+
+        # generate the where clause
+        s = ' and '.join(['_%s=%s'%(col, self.db.arg) for col in where])
+        sql = 'select id from _%s where %s'%(self.classname, s)
+        self.db.sql(sql, tuple(args))
+        l = [x[0] for x in self.db.sql_fetchall()]
         if __debug__:
             print >>hyperdb.DEBUG, 'find ... ', l
         return l